diff libtwamr/lsp_avg.h @ 389:9cd332a94c97

libtwamr: integrate lsp_avg.c
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 06 May 2024 06:49:54 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/lsp_avg.h	Mon May 06 06:49:54 2024 +0000
@@ -0,0 +1,74 @@
+/*
+********************************************************************************
+*
+*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
+*                                R99   Version 3.3.0                
+*                                REL-4 Version 4.1.0                
+*
+********************************************************************************
+*
+*      File             : lsp_avg.h
+*      Purpose:         : LSP averaging and history
+*                         The LSPs are averaged over 8 frames
+*
+********************************************************************************
+*/
+#ifndef lsp_avg_h
+#define lsp_avg_h "$Id $"
+ 
+/*
+********************************************************************************
+*                         INCLUDE FILES
+********************************************************************************
+*/
+#include "typedef.h"
+#include "cnst.h"
+
+/*
+********************************************************************************
+*                         LOCAL VARIABLES AND TABLES
+********************************************************************************
+*/
+
+#define EXPCONST          5243               /* 0.16 in Q15 */
+ 
+/*
+********************************************************************************
+*                         DEFINITION OF DATA TYPES
+********************************************************************************
+*/
+typedef struct {
+  Word16 lsp_meanSave[M];          /* Averaged LSPs saved for efficiency  */
+} lsp_avgState;
+ 
+/*
+********************************************************************************
+*                         DECLARATION OF PROTOTYPES
+********************************************************************************
+*/
+
+/*
+**************************************************************************
+*
+*  Function    : lsp_history_reset
+*  Purpose     : Resets state memory
+*
+**************************************************************************
+*/
+void lsp_avg_reset (
+    lsp_avgState *state
+);
+ 
+/*
+**************************************************************************
+*
+*  Function    : lsp_avg
+*  Purpose     : Calculate the LSP averages
+*
+**************************************************************************
+*/
+void lsp_avg (
+    lsp_avgState *st,     /* i/o : State struct                 Q15 */
+    Word16 *lsp           /* i   : LSP vector                   Q15 */
+);
+#endif